Dogfish's vague directions sound correct. The jetty is South of the boat basin. The convenience store/gas station he mentions carries tackle, but I recommend taking a right just past this store and driving down a few blocks to the marine supply store. It will be on your left. They have tackle plus can tell you what seems to work. I posted last fall about catching fish with a saltwater fly pattern I picked up from the marine store.....see below. Have fun.
JMS

Regarding jetties I have done okay catching black sea bass throwing large flies (various combinations of red/orange/yellow plastic) below a smaller banana sinker. Because you are keeping it close to the bottom plan on losing some terminal tackle.